Journal
CARBOHYDRATE POLYMERS
Volume 193, Issue -, Pages 373-382Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.04.019
Keywords
Hericium erinaceus fruit body; Water-soluble polysaccharides; Solvent extractions; Physicochemical properties; In vitro antioxidant activity
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Funding
- National Natural Science Foundation of China [31671812]
- Key Research & Development Program (Modern Agriculture) of Jiangsu Province [BE2017362]
- Jiangsu Overseas Research & Training Program for University Prominent Young & Middle-aged Teachers and Presidents
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In this study, hot water, 0.9% NaCl, citric acid, and 1.25 M NaOH/0.05% NaBH4 were separately used for the extraction of water-soluble H. erinaceus polysaccharides (HEPs; HEP-W, HEP-S, HEP-C, and HEP-A) from the fruit body of Hericium erinaceus. The physicochemical properties and biological activities were then investigated and compared. Results showed that the extraction solvents exhibited significant effects on the extraction yields, molecular weights, monosaccharide compositions, preliminary structural characteristics, microstructures of HEPs and on their contents, such as neutral sugar, uronic acid, protein, and beta-(1 -> 3)-glucan. In vitro antioxidant activity assays indicated that HEP-C extracted with citric acid solution showed stronger scavenging abilities on hydroxyl and DPPH radicals and antioxidant capacities than HEP-W and HEP-S. Moreover, HEP-C exhibited the strongest inhibitory effects on alpha-glycosidase and alpha-amylase activities. Therefore, HEP-C extracted with citric acid can be developed as a potential bioactive ingredient for applications in food, medicine, and cosmetics industries.
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